[clang] [Clang][attr] Add 'kcfi_salt' attribute (PR #141846)

[Aaron Ballman via cfe-commits]

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@@ -5259,19 +5276,22 @@ class FunctionProtoType final
   /// the various bits of extra information about a function prototype.
   struct ExtProtoInfo {
     FunctionType::ExtInfo ExtInfo;
+    Qualifiers TypeQuals;
+    RefQualifierKind RefQualifier = RQ_None;
+    ExceptionSpecInfo ExceptionSpec;
+    const ExtParameterInfo *ExtParameterInfos = nullptr;
+    SourceLocation EllipsisLoc;
+    FunctionEffectsRef FunctionEffects;
+    FunctionTypeExtraAttributeInfo ExtraAttributeInfo;
+
     LLVM_PREFERRED_TYPE(bool)
     unsigned Variadic : 1;
     LLVM_PREFERRED_TYPE(bool)
     unsigned HasTrailingReturn : 1;
     LLVM_PREFERRED_TYPE(bool)
     unsigned CFIUncheckedCallee : 1;
+    LLVM_PREFERRED_TYPE(uint16_t)
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AaronBallman wrote:

Same here as above.

https://github.com/llvm/llvm-project/pull/141846